#4D101D#4D101D

#4D101D is a dark, moderate red. Relative luminance 0.020; OKLCH L 28.5% C 0.091 H 12.9°. Best body text is #FFFFFF at 14.92:1 contrast (WCAG AA passes).

Color values

HEX	#4D101D
RGB	rgb(77, 16, 29)
HSL	hsl(347, 66%, 18%)
HSV	hsv(347, 79%, 30%)
CMYK	cmyk(0%, 79.2%, 62.3%, 69.8%)
CIE-LAB	lab(15.68, 29.27, 8.08)
CIE-LCH	lch(15.68, 30.37, 15.43°)
OKLab	oklab(28.46% 0.0883 0.0202)
OKLCH	oklch(28.46% 0.091 12.9)
XYZ	xyz(3.4680, 2.0376, 1.3728)
Luminance	0.0204 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#4D101D #104D40

analogous

#4D103B #4D101D #4D2110

triadic

#4D101D #1D4D10 #101D4D

tetradic

#4D101D #3B4D10 #104D40 #21104D

square

#4D101D #3B4D10 #104D40 #21104D

split-complementary

#4D101D #104D21 #103B4D

monochromatic

#19050A #1A050A #4D101D #801B30 #B22543

Accessibility & contrast

On white

14.92

#4D101D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#4D101D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #4D101D

14.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##4D101D	#FFFFFF	#000000	##FFFFFF
##4D101D	1.00	14.92	1.41	14.92
#FFFFFF	14.92	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201F1D

Deuteranopia (green-blind)

#2F2C1B

Tritanopia (blue-blind)

#550315

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #4d101d;
/* rgb */ color: rgb(77, 16, 29);
/* oklch */ color: oklch(28.5% 0.091 12.9);

Tailwind

colors: {
  custom: {
    50: '#835458',
    500: '#4d101d',
    950: '#000000',
  },
}

SCSS

$custom: #4d101d;
$custom-light: #835458;
$custom-dark: #000000;

JSON

{
  "hex": "#4d101d",
  "rgb": {
    "r": 77,
    "g": 16,
    "b": 29
  },
  "hsl": {
    "h": 347.213,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.28462,
    "c": 0.09059,
    "h": 12.9
  },
  "luminance": 0.02037
}

Semantic roles & 50–950 ramp

primary

#4D101D

secondary

#328775

accent

#E9C43F

background

#F8F5F5

surface

#F0E8E9

border

#CBC4C5

text

#0B0303

muted

#7C7878

Preview Lab

Preview with #4D101D

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →